The photos in the article are not shot in-the-moment. The children pose in front of a camera, probably with lighting around. They don’t smile because they are i

The photos in the article are not shot in-the-moment. The children pose in front of a camera, probably with lighting around. They don’t smile because they are in a kind of serious setting, look into a camera and do not interact with anyone. Edit: Maybe the photographer is bad at soliciting emotions from his subjects.